Paving and process of paving streets and the like



Au 7, m3. 1,463,979

R. c. STUBBS PAVING AND PROCESSOF PAVING STREETS AND THE LIKE Filed001:. 1 1922 ROBERT @WWBGF- Patented Aug. 7 319 23.

tantra s EUBEET (C. ST'UBBE,

0E IDALLAS, TEXAS.

PAVING AND PROCESS OF PAVTNG STREETS AND THE LIKE.

Application filed detobcr 7,

To all whom it may concern.

Be it known that 1, ROBERT C. STUBBB, a citizen of the United States,residing at Dallas, in the county of Dallas and State of Texas, haveinvented certain new and useful Improvements in Paving and Processes ofPavin Streets and the like, of which the following is a specification.

My invention relates to paving for streets and roadsand the like; andthe object is to provide a process for making an efficient and lastingpaving. There has been much trouble with streets and roads made of aconcrete base and a coating of asphaltic or bituminous material becausethe coating becomes wavy and bumpy because the coating moves on theconcrete base and buckles. The object of this invention is to provide aprocess of preparing the surface of the concrete base with systematic oruniform ribs or ridges which will prevent the coating of asphalt frommoving or slipping on the concrete and so maintain an even surface andto unite the coating with the concrete base so that there will be noseparation of the coatin from the concrete.

lieference is bad to the accompanying drawings which form a part of thisapplication.

ltig. 1 is a section of a concrete base prepared. for receivin a coatingof asphalt or similar material. ig. 2 is a section of the paving afterthe coating'has been applied.

The concrete base isprepared under the processes described in patentsgranted to me, Nos. 918,388 and 1,383,851. lBy changing the design ofthe cleats in the vibrator shown in the latter patent, the surface ofthe concrete slab or base can be formed with uniform ribs or ridges byvibration and pressure. The asphalt coating is placed on the base andforced down, in between the ridges or ribs by suitable pressure andvibrations to force all of the air or approximately all of the air outof the coating and to make the coating cling to the concrete down inbetween the rid es and the vibrations and pressure may applied to thecoating in the same manner as pressure and vibrations are applied to theconcrete base. The pressure and vibration, when applied to the concrete,will cause the concrete and surplus mortar to rise up about the cleatswhich are forming the concrete. This process makes a new product inpaving. The new 1922. Serial No. 592,965.

product is composed of a concrete base with a ridged surface and anasphaltic coating united to the base by portions of the coatin forceddown in the spaces between the ri ges of the concrete. The object is tomake a. permanent bond of the asphaltic coating with the concrete sothat there will be no moving of the coating of asphalt or bituminousmaterial on the concrete base. The design of the ridged surface may bevaried. All the ridges need not be parallel necessarily. Some ridges mayrun in one direction and others in another direction and so make themoving of the coating on the concrete less liable to move in anydirection.

What ll claim, is,-

1. The herein described process of making paving for streets and thelike consisting of preparing a base or slab of concrete, placing apressure-exerting means consisting of a platform made up of spacedcleats on the fresh laid concrete for periods of time, applyingvibrations to said pressure exerting means for expelling air and surplusmoisture from the concrete and for forming grooves in the surface of theconcrete, removing said pressure-exerting means and placing a relativelythick coating of asphaltic material on the concrete and forcing portionsof the asphaltic material into said grooves.

2. The herein described process of making paving for streets and thelike consisting of preparing a base or slab of concrete on a subgrade,using vibration and pressure enertin means consisting of a platform madeup 0 spaced cleats on the surface of the concrete to drive out air andsurplus moisture and to form uniform ridges or ribs of concrete beforethe concrete is cured, removing the pressure-exerting means, then layina surface and binding coating of aspha tic material in quick successionon the concrete base and forcing portions of the asphaltic material downinto the spaces between the ridges of concrete and bonding the asphalticcoating and concrete base together.

3. The herein described process of making paving for streets and thelike consisting of preparmg a base or slab of concrete, placing apressure-exerting means consisting of a plat orm made up of spacedcleats on the fresh laid concrete for periods of time, applyingvibrations to said pressure exerting means for expelling air and surplusmoisture from the concreteand for forming grooves in the surface of theconcrete, removing the pressure-exerting means, p1ac- 5 ing a relativelythick coating of asphaltic material on the concrete and forcing portionsof the asphaltio material into said grooves, and applying pressure andvibrations simultaneously for bonding the asphaltic material to the slabof concrete. 10

In testimony whereof, I set my hand, this 4th day of October, 1922.

ROBERT C. STUBBS.

